1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
|
/* ResidualVM - A 3D game interpreter
*
* ResidualVM is the legal property of its developers, whose names
* are too numerous to list here. Please refer to the COPYRIGHT
* file distributed with this source distribution.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
*/
#include "math/aabb.h"
namespace Math {
AABB::AABB() : _valid(false) {
}
AABB::AABB(const Math::Vector3d &min, const Math::Vector3d &max) : _valid(true), _min(min), _max(max) {
}
void AABB::reset() {
_valid = false;
}
void AABB::expand(const Math::Vector3d &v) {
if (!_valid) {
_min = v;
_max = v;
_valid = true;
} else {
if (v.x() < _min.x())
_min.x() = v.x();
if (v.y() < _min.y())
_min.y() = v.y();
if (v.z() < _min.z())
_min.z() = v.z();
if (v.x() > _max.x())
_max.x() = v.x();
if (v.y() > _max.y())
_max.y() = v.y();
if (v.z() > _max.z())
_max.z() = v.z();
}
}
void AABB::transform(const Math::Matrix4 &matrix) {
Math::Vector3d min = _min;
Math::Vector3d max = _max;
reset();
Math::Vector3d verts[8];
verts[0].set(min.x(), min.y(), min.z());
verts[1].set(max.x(), min.y(), min.z());
verts[2].set(min.x(), max.y(), min.z());
verts[3].set(min.x(), min.y(), max.z());
verts[4].set(max.x(), max.y(), min.z());
verts[5].set(max.x(), min.y(), max.z());
verts[6].set(min.x(), max.y(), max.z());
verts[7].set(max.x(), max.y(), max.z());
for (int i = 0; i < 8; ++i) {
matrix.transform(&verts[i], true);
expand(verts[i]);
}
}
}
|
